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Douglas DD Yang RD Jensen P Thiele DL . Fatal labetalol-induced hepatic injury. Am J Med 1989; 87: 235–6.

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Zimmerman HJ . Update of hepatotoxicity due to classes of drugs in common clinical use: Non-steroidal drugs, anti-inflammatory drugs, antibiotics, antihypertensives, and cardiac and psychotropic agents. Semin Liver Dis 1990; 10: 322–8.

Kane J Gregg I Stephens B . A long-term study of labetalol in general practice. Br J Clin Pharmacol 1979; 8 (suppl):167S–70S.

Prichard BNC Boakes AJ Hernandez R . Long-term treatment of hypertension with labetalol. Br J Clin Pharmacol 1979; 8 (suppl):171S–7S.

Trandate (labetalol hydrochloride). Physicians' desk reference. 46th ed. Montvale, NJ: Medical Economics Data, 1992: 579–83.

Michelson EL . Labetalol hepatotoxicity (letter). Ann Intern Med 1991; 114: 341.

Michelson EL Frishman WH Lewis JE . Multicenter clinical evaluation of long-term efficacy and safety of labetalol in treatment of hypertension. Am J Med 1983; 75 (suppl 4A):68–80.

Harvengt C . Labetalol hepatotoxicity (letter). Ann Intern Med 1991; 114: 341.

Gwaltney JM Jr . The common cold. In: Mandel GL Douglas RG Benet JE . eds. Principles and practice of infectious diseases. New York: Churchill Livingstone, 1985: 351–4.

Kapikian AZ . The common cold. In: Wyngaarden JB Smith LH . Cecil textbook of medicine. Philadelphia: WB Saunders, 1988: 1754.

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Hayden FG Gwaltney JM Jr . Intranasal interferon-alpha-2 for prevention of rhinoviral infections and illness. J Infect Dis 1983; 148: 543–50.

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Turner RB Felton A Kosak K Kelsey DK Meschievitz CK . Prevention of experimental coronavirus colds with intranasal alpha-2b interferon. J Infect Dis 1986; 154: 443–7.

Gwaltney JM Jr Hendley JO Simon G Jordan WS Jr . Rhinoviral infections in an industrial population. The occurrence of illness. N Engl J Med 1966; 275: 1261–8.

Farr BM Gwaltney JM Jr Adams KF Hayden FG . Interferon-alpha-2 for prevention of natural rhinovirus colds. Antimicrob Agents Chemother 1984; 26: 31–4.

Monto AS Shope TC Schwartz SA Albrecht JK . Intranasal interferon-alpha-2b for seasonal prophylaxis of respiratory infection. J Infect Dis 1986; 154: 128–33.

Douglas RM Albrecht JK Miles HB Moore BW Read R Worswick DA . Intranasal interferon-alpha-2 prophylaxis of natural respiratory virus infection. J Infect Dis 1985; 151: 731–6.

Douglas RM Moore BW Miles HB Davies LM . Prophylactic efficacy of intranasal alpha-2-interferon against rhinovirus infections in the family setting. N Engl J Med 1986; 314: 65–70.

Hayden F Albrecht JK Kaiser DL Gwaltney JM . Prevention of natural colds by contact prophylaxis with intranasal alpha-2-interferon. N Engl J Med 1986; 314: 71–5.

Monto AS Schwartz SA Albrecht JK . Ineffectiveness of post-exposure prophylaxis of rhinovirus infection with low dose intranasal alpha-2b-interferon in families. Antimicrob Agents Chemother 1989; 33: 387–90.

Hayden FG Gwaltney JM . Intranasal interferon-alpha-2 treatment of experimental rhinoviral colds. J Infect Dis 1984; 150: 174–80.

Hayden FG Kaiser D Albrecht JK . Intranasal recombinant alpha-2b-interferon treatment of naturally occurring common colds. Antimicrob Agents Chemother 1988; 32: 224–30.

Measles—United States, first 26 weeks. MMWR 1989; 38: 863–71.

Hussey GD Klein M . A randomized, controlled trial of vitamin A in children with severe measles. N Engl J Med 1990; 323: 160–4.

Barclay AJG Foster A Sommer A . Vitamin A supplements and mortality related to measles: A randomised clinical trial. Br Med J 1987; 294: 294–6.

Warren L Jawetz E . RNA enveloped viruses. In: Medical microbiology and immunology. Norwalk, CT: Appleton & Lange 1989: 168.

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Vitamin A for measles (editorial). Lancet 1987; 1: 1067–8.

Varavithya W Stoecker B Chaiyaratana W Kittikool J . Vitamin A status of Thai children with measles. Trop Geogr Med 1986; 38: 359–61.

Foster A Johnson GJ . Measles, comeal ulceration and childhood blindness: Prevention and treatment. Trop Dr 1988; 18: 74–8.

Pitt GAJ . The assessment of vitamin A status. Proc Nutr Soc 1981; 40: 173–7.

Biesalski HK Seelert K . Vitamin A deficiency: New knowledge of diagnosis, consequences and therapy. J Nutr Sci 1989; 28: 3–16.

McCarter D Holbrook J . Vitamins, minerals, and general nutrition. In: Herfindal E Gourley D Hart L eds. Clinical pharmacy and therapeutics. 4th ed. Baltimore: Williams & Wilkins, 1988: 18–21.

Sommer A Katz J Tarwotjo I . Increased risk of respiratory disease and diarrhea in children with preexisting mild vitamin A deficiency. Am J Clin Nutr 1984; 40: 1090–5.

Sommer A Hussaini G Tarwotjo I Susanto D . Increased mortality in children with mild vitamin A deficiency. Lancet 1983; 2: 585–8.

Taylor J . Nutritional blindness—xerophthalmia. Trop Dr 1985; 15: 180–2.

Reddy V Bhaskaram P Raghuramulu N Milton RC Rao V Madhusudan J . Relationship between measles, malnutrition, and blindness: A prospective study in Indian children. Am J Clin Nutr 1986; 44: 924–30.